llvm-svn: 43384

registers in case, when FP pointer was eliminated. This should fixes misc. random
EH-related crahses, when stuff is compiled with -fomit-frame-pointer.
Thanks Duncan for nailing this bug!

llvm-svn: 43381

want them later (mips32/64).

llvm-svn: 43380

llvm-svn: 43379

improved wording in source files.

llvm-svn: 43377

Loosen up iv reuse to allow reuse of the same stride but a larger type when truncating from the larger type to smaller type is free.
e.g.
Turns this loop:
LBB1_1: # entry.bb_crit_edge
        xorl    %ecx, %ecx
        xorw    %dx, %dx
        movw    %dx, %si
LBB1_2: # bb
        movl    L_X$non_lazy_ptr, %edi
        movw    %si, (%edi)
        movl    L_Y$non_lazy_ptr, %edi
        movw    %dx, (%edi)
		addw    $4, %dx
		incw    %si
		incl    %ecx
		cmpl    %eax, %ecx
		jne     LBB1_2  # bb
	
into

LBB1_1: # entry.bb_crit_edge
        xorl    %ecx, %ecx
        xorw    %dx, %dx
LBB1_2: # bb
        movl    L_X$non_lazy_ptr, %esi
        movw    %cx, (%esi)
        movl    L_Y$non_lazy_ptr, %esi
        movw    %dx, (%esi)
        addw    $4, %dx
		incl    %ecx
        cmpl    %eax, %ecx
        jne     LBB1_2  # bb

llvm-svn: 43375

llvm-svn: 43374

pointers that employ unused bits in a pointer to store extra data.

llvm-svn: 43373

Silenced VC++ warning.

llvm-svn: 43372

llvm-svn: 43369

llvm-svn: 43368

stride may be rewritten using the stride of the compare instruction.

llvm-svn: 43367

llvm-svn: 43364

llvm-svn: 43359

llvm-svn: 43357

llvm-svn: 43356

llvm-svn: 43353

object serialization.

llvm-svn: 43352

llvm-svn: 43351

I forgot about yesterday.

llvm-svn: 43350

Deserialize.cpp to the XCode project.

llvm-svn: 43345

Use NVT rather than looking it up, since we have
it to hand.

llvm-svn: 43341

llvm-svn: 43340

llvm-svn: 43339

llvm-svn: 43338

llvm-svn: 43337

and the compaison is against a constant value, try eliminate the stride
by moving the compare instruction to another stride and change its
constant operand accordingly. e.g.

loop:
...
v1 = v1 + 3
v2 = v2 + 1
if (v2 < 10) goto loop
=>
loop:
...
v1 = v1 + 3
if (v1 < 30) goto loop

llvm-svn: 43336

llvm-svn: 43335

semi-automated maintenance.

llvm-svn: 43334

llvm-svn: 43333

llvm-svn: 43332

llvm-svn: 43331

llvm-svn: 43330

llvm-svn: 43329

llvm-svn: 43328

llvm-svn: 43327

llvm-svn: 43326

llvm-svn: 43323

Make it possible for DomTreeBase to be constructed from MachineFunction's as well as just Function's.

llvm-svn: 43321

for backpatching.

Added Deserialize::ReadVal.

llvm-svn: 43319